One of the primary distinctions between our intelligence with that of other primates may lay not so much in any specific skill but in our ability to extend knowledge gained in one context to new and different ones.

A. between our intelligence with that of other primates may lay not so much in any specific skill but
B. between our intelligence with that of other primates may lie not so much in any specific skill but instead
C. between our intelligence and that of other primates may lie not so much in any specific skill as
D. our intelligence has from that of other primates may lie not in any specific skill as
E. of our intelligence to that of other primates may lay not in any specific skill but